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Electrical Engineering
Electrical engineering is a field of engineering that deals with the study and application of electricity, electronics and electromagnetism.
23,056 Questions
What is current coil and voltage coil?
The current coil is one through which the current of source can pass. This coil is connected in series. The voltage coil is connected parallel to the applied voltage. In the current coil the quantity of current flowing is proportional to the current flowing in load while in the voltage coil, current flowing is proportional to applied supply voltage. The voltage coil current is independent of current flow in load. For a complete understanding, please refer to a watt meter diagram.
Where can I find a schematic diagram of a forward reverse magnetic contactor switch?
Oh, dude, finding a schematic diagram for a forward reverse magnetic contactor switch is like finding a needle in a haystack. You might have better luck asking a unicorn for directions. But seriously, you can try checking online electrical forums or contacting the manufacturer for the specific diagram you need. Good luck on your quest for knowledge!
What refers to the number of separate staggered power winding's in the motor or alternator?
The term you are referring to is "phase." In a motor or alternator, the number of separate staggered power windings is known as the phase. The most common types are single-phase and three-phase systems, with three-phase being more efficient and widely used in industrial applications due to its balanced power distribution. The phase configuration determines the motor's performance characteristics, such as torque output and efficiency.
Well, isn't that a happy little question! To connect the motor control to the PC, you can use communication cables like Ethernet or USB. These cables allow the programmable controller to send commands from the PC to the motor, creating a harmonious flow of information and control. Just remember to make sure everything is connected securely and with love, and your motor will be dancing to the PC's tune in no time!
Why UPF wattmeter is used in SC test?
UPF(Unity Power Factor) is connected as the power factor is 1. Unlike OC where quantum dynamic rules apply in SC the time space gravitational lensing takes place which is why only LPF can be used.
Why are circuit breakers and contactors coated with silver?
Silver is used because it is the most conductive metal we have discovered. It also resists oxidizing, only doing so in the presence of sulfur, some halogens, and both nitric and sulfuric acids. The sulfur in many foods is what makes real silverware tarnish...a thin coating of sulfide is formed.
http://www.tpub.com/content/navyict/14120/141200066.htm
http://www.daviddarling.info/encyclopedia/S/silver.HTML
AnswerI think silver is supposed to be a good conductor of electricity. ANSWER:It prevents the contact points from corrosion and oxidation. Its not silver, its a mixture of tin and lead called solder. AnswerSilver is the best metallic electrical conductor...until it tarnishes (oxidizes)...at which point it becomes a rather poor conductor. Plated contacts are usually coated with Gold, which is almost as good a conductor as silver, but it's oxidized form still conducts about as well as pure gold. As for solder, it's usually a lead/tin alloy in electronics work, but can also be made with small amounts of silver as well. Lead in solder has been banned for piping where potable water is carried in the US. Answer: They're not.The issue isn't one of picking a metal or metal alloy that conducts well, but one that will resist damage or pitting due to electric arcing. Alloys with tungsten are often used. There are some other metals which can be alloyed to make arc resistant contacts, and they're all pretty exotic ones. Silver is the best metallic conductor at room temperatures under normal conditions, but switch contacts don't operate under "normal conditions" when they are opening and closing regularly.When a current carrying contact set (like in a switch or circuit breaker) comes open, an arc will begin across the forming gap. This arc will continue for a short while as the contacts get farther apart and eventually will be extinguished. The arc will cause a bit of damage to the contact surface for that little bit that it's happening. Soft metals like silver, gold, copper and aluminum will get pounded by the arc. It will shred them in such a short time that it isn't worth building a contact set with them, at least not on a contact set that is going to get a lot of work opening and closing.
Why do people call the microphone with that name instead of macrophone?
microphone coined from Gk. mikros "small" + phone "sound" (see fame). Modern meaning dates from 1929, from use in radio broadcasting and movie recording. Earlier, "telephone transmitter" (1878) and "ear trumpet for the hard-of-hearing" (1683). Of the two spellings of the short form of the word, mike (1927) is older than mic (1961).
So they call it micro-phone due to the fact that it will record/trasmit even the smallest of sounds.
Macrophone has recently been coined by persons in the (voice over IP) field or VOIP as (a large sample of a recording or transmission).
The conductor used to connect equipment or circuit to an earth electrode is earth bond or in some cases a supplementary bond. This will be generally carried out using a copper tape or an earth cable.
How does a code generator work?
Code generators are used to hack into programs that typically require a license to use. The generator scans through a series of numbers until it comes up with a pattern compatible to the program.
Why does the open-circuit test essentially show only excitation losses and not in copper losses?
Oh, dude, the open-circuit test is like when you're checking out a car but not actually driving it - you're just seeing how it revs up without any load. So, it's all about measuring the excitation losses because there's no current flowing through the windings to cause copper losses. It's like checking out a car's engine without actually taking it for a spin - you're just seeing how it purrs without any real work.
Differetiate between solid earthing and ELCB?
ELCB is the connection to the direct earth path using protective device.while solid earthing is without protective device.A form of ELCB should be installed when direct earth path of low enough impendance can not be obtained.
For electrical engineering, Mechanics will probably benefit you more. However, both courses would be good for your career.
Why you use one sided z transform?
to incorporate initial conditions when solving difference equations using the z-transform approach
What are the disadvantages of PLC unitary?
One disadvantage of PLC (Programmable Logic Controller) unitary systems is their limited processing power compared to more advanced control systems. This can restrict the complexity of tasks that can be performed and the speed at which they can be executed. Additionally, PLC unitary systems may lack the flexibility to easily integrate with other systems or devices, leading to potential limitations in scalability and compatibility. Lastly, the programming language used in PLC unitary systems may be less user-friendly and require specialized knowledge, making it more challenging for users to modify or troubleshoot the system.
A meter rule is apropriate as it can measure up to unlimited meter while micrometer is suitable for diameter since it has a high degree of accuracy to small diameters in millimeters.
How do connect a bell to a circuit?
To connect a bell to a circuit, first ensure that the power source is turned off for safety. Connect one terminal of the bell to the positive terminal of the power source and the other terminal to a switch. Then, connect the other side of the switch back to the negative terminal of the power source, completing the circuit. When the switch is closed, it allows current to flow, activating the bell.
Where can WE buy ac class 2 transformer 120v-60hz V12?
You can purchase a Class 2 transformer rated for 120V-60Hz V12 from various sources, including electronics retailers like Digi-Key, Mouser, or Newark. Online marketplaces such as Amazon and eBay also often have a selection of transformers. Additionally, local electrical supply stores may carry these transformers or can order them for you. Always ensure to check the specifications to confirm compatibility with your needs.
A DC cable is a type of electrical cable designed to carry direct current (DC) electricity. It typically consists of one or more conductors insulated with materials that can handle the specific voltage and current levels. DC cables are commonly used in applications such as solar power systems, battery connections, and various electronic devices. Their design ensures minimal energy loss and safe transmission of power.
